<meta charset="UTF-8">
<input type="button" value="创建用户组" id="left_button"/>
<input type="button" value="修改用户组" id="left_button1"/>
<input type="button" value="用户" id="left_button2"/>
<input type="button" value="修改用户" id="left_button3"/>
<input type="button" value="token" id="left_button4"/>